THESAURUS
gnawing
ablative, abradant, abrasive, ache, aching, acute, acute pain, afflictive, agonizing, angina, atrocious, attritive, backache, bellyache, bite, biting, boring pain, cephalalgia, chafing, charley horse, colic, collywobbles, cramp, cramping, cramps, crick, cruel, darting pain, distressing, earache, erosive, excruciating, fret, fretting, fulgurant pain, galling, girdle pain, grave, grinding, gripe, gripes, griping, gut-ache, hard, harrowing, harsh, headache, heartburn, hemicrania, hitch, hurtful, hurting, jumping pain, kink, lancinating pain, megrim, migraine, nip, odontalgia, otalgia, painful, pang, paroxysm, paroxysmal, piercing, pinch, poignant, prick, pungent, pyrosis, racking, rasping, seizure, severe, sharp, sharp pain, shoot, shooting, shooting pain, sick headache, spasm, spasmatic, spasmic, spasmodic, splitting headache, stab, stabbing, stabbing pain, stinging, stitch, stomachache, thrill, throbbing pain, throes, toothache, tormen, tormenting, torturous, tweak, twinge, twitch, wrench
